75. DESCRIPTION.
a. Intake System. The air intake system consists of oil bath air cleaner, connecting air hose, and carburetor intake hose fitting. This system is located on left side of vehicle.
b. Exhaust System. The exhaust system consists of muffler and tailpiece assembly, front exhaust pipe assembly, and rear exhaust pipe. Exhaust pipe ends are a slip fit in cylinder exhaust ports.
76. AIR CLEANER (figs. [46] and [47]).
a. General. Air cleaner should not be submerged in water, nor should high‐pressure stream be directed into cleaner louvers (where air enters on rear of body) when cleaning vehicle. Either water or dirt entering air cleaner in excessive quantities will raise the oil level in oil cup and choke off proper air supply to carburetor.
b. Service. With vehicle in normal use on hard‐surfaced roads, clean and refill air cleaner oil cup with engine oil (seasonal grade) at least each time engine oil tank is drained and refilled. CAUTION: Service more frequently under dusty conditions; daily under extremely dusty conditions. Check oil supply daily.
(1) Hold oil cup with one hand and release (unlatch) oil cup retaining spring clips to remove oil cup.
(2) If oil in cup is clean, with no signs of dirt and grit in oil or cup, but the oil level is below the indicated level mark, add engine oil (seasonal grade) to bring level up to mark. NOTE: If oil and cup are dirty, empty out oil and wash out cup with dry‐cleaning solvent. Refill with clean engine oil (seasonal grade) to indicated level mark.
(3) Before installing oil cup make sure that the oil cup gasket is in place and in good condition.